Maine,
<script>
        function printPrime(limit) {
            var result = [],
                isPrime = false,
                number = 1;
            for (number; number < limit; number++) {
                for (i = 2; i <= number; i++) {
                    if (number % i == 0 && number != i) {
                        isPrime = false;
                        break;
                    } else {
                        isPrime = true;
                    }
                }
                if (isPrime) {
                    result.push(number);
                }
            }
            console.log(result);
        }
        printPrime(10);
    </script>
https://ru.wikipedia.org/wiki/Простое_число